Mycosis fungoides in Arab children and adolescents: a report of 36 patients from Kuwait.

Mycosis fungoides (MF) is rare in children and adolescents. This study was aimed to determine the clinicoepidemiologic features of juvenile onset (≤18 yrs) MF in Kuwait. Thirty-six children and adolescents (≤18 yrs) with MF registered in a referral photobiology unit for cutaneous lymphomas between July 1991 and June 2009 were included in this study. Children and adolescents were observed to constitute 16.6% of the total number of patients with MF, with 97% of patients of Arab ethnicity. The age-adjusted incidence rate of MF in children and adolescents among the total population was 0.29/100,000 persons/year. Among 36 Arab children and adolescents, boys outnumbered girls by 1.25:1. Mean and median age at onset of disease was 9 years, and age at diagnosis was 13 years. Patch stage disease was the most common clinical variant (75%) with 56% with pure hypopigmented MF-variant. The majority of patients (75%) had stage IB (TNM and B staging) disease. The study highlights a high prevalence and incidence of juvenile MF in Kuwait with a predominantly hypopigmented presentation.